Title:
HYDRAULIC ACTUATOR SEALING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/230466
Kind Code:
A1
Abstract:
Provided is a hydraulic actuator sealing device (50) comprising an annular piston (2), a cancel plate (3), a return spring (4), and an annular piston-side spring seat (8), the hydraulic actuator sealing device being characterized in that the annular piston (2) comprises: an annular pressure-receiving board (2c) that receives a load of the return spring (4); an inner cylinder (2b) that extends from an inner circumferential side of the pressure-receiving board (2c) toward the cancel plate (3); and a curved section (2g) that connects the pressure-receiving board (2c) and the inner cylinder (2b), and that bulges from the pressure-receiving board (2c), in a direction of separating from the return spring (4) in the axial direction.
Inventors:
KAMO DAIKI (JP)
GOTO KIICHIRO (JP)
GOTO KIICHIRO (JP)
Application Number:
PCT/JP2020/014489
Publication Date:
November 19, 2020
Filing Date:
March 30, 2020
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F16D25/0638; F16D25/12
Domestic Patent References:
| WO2007126146A1 | 2007-11-08 |
Foreign References:
| JP2014173717A | 2014-09-22 | |||
| JP2002181077A | 2002-06-26 | |||
| JP2008025652A | 2008-02-07 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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